CTU modules

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Netronix CTU-M


The product may vary in appearance. Before purchasing, please read the description of the product, its technical documentation or contact us.

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CTU-M series devices are contactless card and transponder RFID readers, with support of the MIFARE® Classic, Ultralight, DESFire proximity standards operating on 13,56MHz frequency. Modules have functionality to program NFC cards and transponders comply with ISO/IEC 14443 standards. Modules (depends on model) have RS232, RS485 or RS232TTL, SPI, I2C, 1-Wire, WIEGAND interfaces.

Product have following functionalities

  • support of MIFARE® Classic, Ultralight, DESFire contactless RFID cards and transponders,
  • built-in antenna,
  • card memory with build-in lock driver,
  • lots of communication interfaces type, depend on version (see Datasheet),
  • built-in relay and buzzer,
  • built-in push-button for reset to default settings,
  • 2 configurable inputs/outputs,
  • two-state outputs control,
  • read-out of two-state input,
  • changeable format of sending ID,
  • MAD functionality,
  • data password protected,
  • software update via serial interface using NEFIR program.

The full model name (P/N) of the devices consists of the name of the CTU family and subsequent letters after the hyphen, corresponding respectively to:

  • support for the proximity standard (D, M, P),
  • interface (2, 4, 5, S),
  • inputs / outputs (R, N),
  • support for additional functionalities (M).

For example CTU-M5R reader has support of MIFARE® Classic, Ultralight, DESFire transponders, RS232TTL, SPI, I2C, 1-Wire, WIEGAND interfaces and build-in relay. A full list of available parameter combinations can be found in the technical documentation.


Supported standardsMIFARE® Classic, Ultralight, DESFire
Operating frequency13,56MHz
Read rangeup to 8cm depends on transponder
InterfaceRS232, RS485, RS232TTL, SPI, I2C, 1-Wire, WIEGAND
Supply voltageM2R and M4R version 7 - 15V, M5R and M5N version 4,5 - 5,5V
Max. current consumption120mA
Working temperature-20°C to +65°C
Size (mm)79.5 x 79.5 x 12